Grinding-machine.



G. W. RENEAR.

GRINDING MACHINE. APPLIOATION FILED MAR. 23; 1909.

Patepted Apr. 5

Snucmtoz CizarZe WlZe/zear M. 20.. PNQTO-LITNOGRAPHERS. WASNINGIGH o c in section of my machine; Fig. 2 a side elein the faces of the rolls serve to tear or 100 UNITED sratr nis PATENT OFFICE.

CHARLES W. RENEAR, OF HONOLULU, TERRITORY OF HAWAII, ASSIGNOR T RENEAR COMPANY LIMITED, OF HONOLULU, TERRITORY OF HAWAII.

GRINDING-MACHINE.

954,134. Specificationof Letters Patent. Iatented Apr, 5, 191() Application filed March 23, 1909. Serial No. 485,196.

To all whom it may concern: ed on the side frames 2, 2. These rolls may Be it known that I, CHARLES IV. RENEAR, be made from steel or cast iron and are a citizen of the United States, residing at placed in horizontal relation one to the Honolulu, in the Territory of Hawaii, have other. The rolls are provided with grooves invented certain new and useful Improve- 6 about their circumference preferably to a 0 ments in Grinding-lvlachines, of which the number of five of such grooves per inch of following is a specification. face surface of the roll, and cut at an angle My invention relates to a grinding and of and also with longitudinal grooves crushing machine .which is more especially 7, in number the same per inch as the grooves adapted for the successful crushing or 6and also at the same angle, but such grooves 5 grinding of the Algeroba bean, the product 7 are out only one-half as deep as the grooves of a tree common to the Hawaiian Islands, 6. The bottom portions of the longitudinal and which when properly crushed and grooves are wider than the upper portions ground constitutes an excellent food for thereof, and such bottom portions are parstock. The pods of this bean contain little, allel with the axis of the roll. The grooves hard seeds which constitute fully one-half are cutto such a depth as to leave sharp cutof the food value of the entire bean, but ting edges between the same. The rolls are, which if not properly crushed or ground are as stated arranged in longitudinal relation, not fully digested by the stock and will proone with the other, and in close proximity, duce deleterious results. Continued experiso that the circumferential grooves upon ments have been made with the view to obtheir faces intermesh. Preferably the for taining a machine that will successfully ward roll of the pair is mounted in an adcrush and grind this bean, but in conse justable bearing in order that it may be 'quence of the excessive amount of sugar moved to or from the rear or fixed roll. therein it becomes gummy in the operation Scrapers 8 are mounted at each end of the so of grinding to a condition approximating machine, said scrapers having their forward that of sticky rubber and clogs up and renedges provided with teeth which mesh with ders useless the machines heretofore used the grooves of the rolls and keep them clean for this purpose, After practical tests I and free them from gelatinous matter. The have produced a machine which I have scraper 8 at the front of the machine is also found to be effective for this purpose and adjustably mounted in order that it may be which successfully crushes the pods of this moved as the posltion of the adjustable roll bean as well as crushesand grinds the little is changed. The scraper operating 011 the hard seeds contained therein, thus putting fixed roll may obviously have a fixed mount them in proper condition to be fed to stock. 111g. Each of the scrapers 1s prov1ded with VVhile my machine is more particularly a standard 9 carry ng a spiral spring 10 adapted to the successful crushing and and a nut 11 by which the pressure of such grinding of the Algeroba bean, it may also scraper on the roll may be increased or be successfully used for the crushing and diminished. The scrapers are water-jackgrinding of other pods and seeds having the eted with small hose connection, to keep same or similar characteristics of the bean them cool. referred to. i The material to be crushed and ground is In the accompanying drawing illustrating fed from above and the rolls are run at a my invention Figure 1 is a plan view partly high rate of speed. The longitudinal grooves vation thereof, and Fig. 3 is an enlarged shred the entire product and also draw or perspective view of a portion of the face of feed the beans between the co-acting faces one of the rolls. of the rolls when the same are running at Similar numerals of reference designate the high rate of speed desired. This rate of like parts in the several figures. speed with its centrifugal force practically 1, 1 designate suitable base pieces or eliminates all of the crushed product and standards on which are mounted the side increasesthe capacity of the machine, thus frames 2, 2, in which frames are ournaled a making it a commercial success. The cirpair of rolls 3, 3, each of which is mounted cumferential grooves constitute alarge "on a shaft 4, l, journaled in boxes 5, 5mountcrushing surface and also out or shred the material. The high rate of speed at Which the rolls are operated eliminates nearly all of the crushed product, including the gummy substance produced by the saccharine matter in the bean, the remaining gummy substance not thus eliminated being removed from the grooves by the scrapers.

In the operation of my machine upon the Algeroba bean for the successful crushing or grinding of which the same is primarily designed, I have found that all of the little, hard seeds contained in said bean are crushed and ground and that the other constituents of such bean are cut, shredded and crushed whereby all of the component parts of the said bean are put in condition for feeding cattle or other stock, thus forming a highly nutritious food for such purpose.

I realize that considerable variation is possible in the details of construction and arrangement of parts without departing from the spirit of my invention, and I therefore do not intend to limit myself to the specific form shown and described.

What I claim as new and desire to secure by Letters Patent is- In a machine of the class described, a pair of rolls, each roll having a series of circumferential beveled grooves which form spaced annular ribs, said ribs having a series of longitudinal beveled grooves which are of less depth than the circumferential grooves, the bottoms of said longitudinal grooves being parallel with the plane of the axis of the roll, he difi'erence in depth between the circumferential and longitudinal grooves leaving the walls of the circumferential grooves with uninterrupted surfaces below the plane of the bottom of the longitudinal grooves, the ribs of one roll fitting snugly and volving in the circumferential grooves of the adjacent roll.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES \V. RENEAR.

Witnesses:

WILFRID A. GREENWELL, DAVID L. WITTINGTON. 

